Grade crossing



T475. y /NVENTOR Herma/z Hotthe ATTORNEYS Patented Jan. 18, 1927.

PATENT OFFICE.

HERMAN' NOTTKEQOF BATTLE CREEK, MICHIGAN.

GRADE CROSSING.

Application led October 7, 1926. Serial No. 140,088.

The objects of this invention are, t

First, to provide in a grade crossing .for railroads an improved metallic construction in which the plate fastening means are easy of manipulation and concealed and protected from wear.

Second, to provide such a knock-down construction with interchangeable fioor plates of convenient size.

Third, to provide improved means of retaining the approach plates in place.

Objects pertaining to details will appear from the detailed description to follow.

I accomplish the objects of the invention by the devices and means described in the following Specification. The invention 1s defined in the claims.

A structure which is a preferred embodiment of my invention is illustrated in the accompanying drawing, forming part of this application, in which:

Fig. 1 is a detail pian view in broken section, certain parts ing cross sectioned on line 1 1 of Figs. 2 and 4, showing a railway crossing embodying the features of my invention.

Fig. 2 is a longitudinal detail sectional view taken on line 2 2 of Fig. 1.

Fig. 3 is a transverse detail sectional view on line 3 3 of Figs. 1 and 2.

Fig. 4 is an enlarged detail sectional View on line 4 4 of Fig. 1, showing details of the plates of the approach and their support.

Fig. 5 is a similar enlarged detail sectional View taken on line 5 5 of Fig. 1, showing details of the spacer block in position.

Fig. 6 is a detail section on line 4 4 of Fig. 1, of the frame of the. approach, the floor plate being omitted.

Fig. 7 is a detail perspective view of one of the spacer'blocks 11.

Fig. 8 is an inverted detail perspective view of one of the main floor plates, showing the integral attaching lug.

Fig. 9 is an enlarged detail of insulated joint for cross arms.

The parts will be identified by their numerals of reference, which are the same in all the views.

1, 1 are the rails of the railroad track. 2, 2 are the usual railroad ties. 3 are the spikes for holding the rails in place. 4 is the approach frame. 5 are the end and cross arms of the approach frame, of a notched form at their inner ends 51 to fit the base, web and head of the rail. 6 are the attaching bolts with nuts 61 preferably used inside the rails for clamping the approach frame in place aga-inst the outside of the rails, as seen in Fig. 3. 7 are the floor plates for the approach, with downwardly-disposed lugs 71 to receive attaching bolts 72 disposed therethrough and through the cross arms 5 (see particularly cross section in Fig. 1). These plates are bolted in place to the cross arms before the approaches are secured by their attaching bolts 6.

8, 8 are the rail end support of the central platform, secured by suitable spikes or bolts 81 to the ties. These ends are rabbeted or flanged at 82 to retain the fioor plates. 9, 9 are the intermediate floor support rails parallel with the ends 8. 10 is a supporting frame between the supports, with sides 101 parallel to and spaced from the rails, and having intermediate cross bars 102 forming a supporting grid for the floor plates. The ends of the sides 101 conform to the flanges of the support rails and are retained in place thereby. Spacer blocks 11 keep the platform in central position. The floor plates 12 are interchangeable and are disposed on the frame and are provided with perforated lugs 121. They are secured by rods 122 disposed through perforations in the frame sides and the lugs. The rods are bent at one end. The cross bars 8 and 102 are divided at the center and an insulated joint (see Fig. 9) is interposed, the same being also insulated from the floor plate ab'ove.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. In a railway crossing, the combination of flanged rail supports, a grid-like frame between the said supports, interchangeable floor plates disposed on said frame and provided With attaching lugs, a cross rod through the attaching lugs and frame, retained in place by the rails of the track, and spacer blocks for the said grid frame to hold it in spaced relation to the track, coac ting as specified.

2. In a railway crossing, a support coniprising a framework, bolts therethrough to attach the same to the web of the rail, de-

taohahle floor plates with perforated lugs, ary frame withV cross bars conformed to and bolts therethrough for attachment to the rails, bolts through thel saine to the said 10 the frame. rails, and interchangeable floor boards with 3. A railway crossing comprising a central suitable lugs for attachingto the said frame,

5 platform, sectional frames `for the said platas speoied.

form, supporting end rails therefor, cross In witness whereof I have hereunto set my bolts therethrough disposed between the hand. v said rails, an approach comprising an auxil- HERMAN NOTTKE. 

